The Air Force unit responsible for testing the Predator A and Predator B UAVs has seen its mission expand since it began operation in June 2005 at Gray Buttes-El Mirage test facility, about 20 miles southeast of Edwards AFB, Calif. The 452nd Flight Test Squadron established a detachment at Gray Buttes to handle development test and evaluation as the test pace picked up for the much-sought UAV. Det. 1 comprises seven permanently assigned 452nd personnel and systems and test personnel from Wright-Patterson AFB, Ohio, Air Force Operational Test and Evaluation Center, and the 31st Test and Evaluation Squadron, a unit of Eglin AFB, Fla., and the contractor General Atomics.
B-1 Bomber Buildup at UK Base Hits Unprecedented Levels
March 12, 2026
About a dozen B-1 bombers are now at RAF Fairford in the United Kingdom as a base from which to launch strikes on Iran, people familiar with the matter told Air & Space Forces Magazine—potentially representing more than half of the U.S. Air Force’s mission-capable Lancer fleet.